3
7
8
1
4
6
1
8
2
5
9
4
3
1
4
1
6
6
5
2
3
7
9

This Sudoku Puzzle has 65 steps and it is solved using Hidden Single, Naked Single, Full House, Locked Candidates Type 1 (Pointing), Locked Candidates Type 2 (Claiming), Naked Pair, Naked Triple, Empty Rectangle techniques.

Try To Solve This Puzzle

## Solution Steps:

1. Row 8 / Column 8 → 6 (Hidden Single)
2. Row 4 / Column 4 → 1 (Hidden Single)
3. Row 9 / Column 5 → 1 (Hidden Single)
4. Row 7 / Column 8 → 1 (Hidden Single)
5. Row 2 / Column 9 → 6 (Hidden Single)
6. Row 1 / Column 8 → 4 (Hidden Single)
7. Row 9 / Column 9 → 4 (Hidden Single)
8. Row 8 / Column 1 → 5 (Hidden Single)
9. Row 3 / Column 2 → 1 (Hidden Single)
10. Row 5 / Column 1 → 1 (Hidden Single)
11. Row 3 / Column 9 → 3 (Hidden Single)
12. Row 9 / Column 7 → 5 (Hidden Single)
13. Row 8 / Column 2 → 2 (Hidden Single)
14. Row 2 / Column 2 → 9 (Naked Single)
15. Row 8 / Column 6 → 9 (Hidden Single)
16. Row 8 / Column 5 → 8 (Naked Single)
17. Row 8 / Column 4 → 4 (Full House)
18. Row 1 / Column 4 → 8 (Hidden Single)
19. Row 9 / Column 1 → 8 (Hidden Single)
20. Locked Candidates Type 1 (Pointing): 7 in b3 => r56c7<>7
21. Locked Candidates Type 1 (Pointing): 7 in b7 => r56c3<>7
22. Locked Candidates Type 2 (Claiming): 7 in r5 => r4c56,r6c456<>7
23. Row 3 / Column 4 → 7 (Hidden Single)
24. Row 1 / Column 7 → 7 (Hidden Single)
25. Naked Pair: 2,8 in r57c9 => r1c9<>2, r4c9<>8
26. Naked Triple: 4,5,6 in r135c3 => r6c3<>4, r6c3<>6
27. Empty Rectangle: 2 in b2 (r26c8) => r6c5<>2
28. Naked Triple: 3,5,6 in r46c5,r6c4 => r46c6<>3, r5c5<>6
29. Row 4 / Column 6 → 8 (Naked Single)
30. Row 4 / Column 2 → 7 (Naked Single)
31. Row 6 / Column 2 → 8 (Full House)
32. Row 4 / Column 8 → 5 (Naked Single)
33. Row 2 / Column 8 → 2 (Naked Single)
34. Row 6 / Column 8 → 7 (Full House)
35. Row 4 / Column 9 → 9 (Naked Single)
36. Row 2 / Column 6 → 3 (Naked Single)
37. Row 2 / Column 4 → 5 (Full House)
38. Row 6 / Column 4 → 3 (Full House)
39. Row 3 / Column 7 → 9 (Naked Single)
40. Row 1 / Column 9 → 5 (Full House)
41. Row 9 / Column 6 → 7 (Naked Single)
42. Row 7 / Column 5 → 3 (Full House)
43. Row 9 / Column 3 → 3 (Full House)
44. Row 4 / Column 5 → 6 (Naked Single)
45. Row 4 / Column 1 → 3 (Full House)
46. Row 6 / Column 3 → 9 (Naked Single)
47. Row 3 / Column 5 → 2 (Naked Single)
48. Row 1 / Column 5 → 9 (Full House)
49. Row 1 / Column 3 → 6 (Naked Single)
50. Row 1 / Column 1 → 2 (Full House)
51. Row 7 / Column 1 → 9 (Naked Single)
52. Row 7 / Column 3 → 7 (Full House)
53. Row 6 / Column 5 → 5 (Naked Single)
54. Row 5 / Column 5 → 7 (Full House)
55. Row 3 / Column 1 → 4 (Naked Single)
56. Row 3 / Column 3 → 5 (Full House)
57. Row 5 / Column 3 → 4 (Full House)
58. Row 6 / Column 1 → 6 (Full House)
59. Row 5 / Column 6 → 2 (Naked Single)
60. Row 6 / Column 6 → 4 (Full House)
61. Row 6 / Column 7 → 2 (Full House)
62. Row 5 / Column 9 → 8 (Naked Single)
63. Row 5 / Column 7 → 6 (Full House)
64. Row 7 / Column 7 → 8 (Full House)
65. Row 7 / Column 9 → 2 (Full House)